Commit cb8b02fd authored by Steve French's avatar Steve French

cifs: mapchars mount option ignored

There are two ways that special characters (not allowed in some
other operating systems like Windows, but allowed in POSIX) have
been mapped in the past ("SFU" and "SFM" mappings) to allow them
to be stored in a range reserved for special chars. The default
for Linux has been to use "mapposix" (ie the SFM mapping) but
the conversion to the new mount API in the 5.11 kernel broke
the ability to override the default mapping of the reserved
characters (like '?' and '*' and '\') via "mapchars" mount option.

This patch fixes that - so can now mount with "mapchars"
mount option to override the default ("mapposix" ie SFM) mapping.
Reported-by: default avatarTyler Spivey <tspivey8@gmail.com>
Fixes: 24e0a1ef ("cifs: switch to new mount api")
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 8b4dd44f
......@@ -904,6 +904,14 @@ static int smb3_fs_context_parse_param(struct fs_context *fc,
ctx->sfu_remap = false; /* disable SFU mapping */
}
break;
case Opt_mapchars:
if (result.negated)
ctx->sfu_remap = false;
else {
ctx->sfu_remap = true;
ctx->remap = false; /* disable SFM (mapposix) mapping */
}
break;
case Opt_user_xattr:
if (result.negated)
ctx->no_xattr = 1;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment